the ground ##ing , despite the storm force winds . the helicopter crew later received a number of awards for bravery . there was no loss of life , but this incident prompted the building of a lighthouse on the sk ##er ##ries in 1979 , and may also have been the example required for the formation of the present search and rescue helicopter unit , based at sum ##burgh airport . = = economy & transport = = croft ##ing is the main ##sta ##y of island life . sheep form the backbone of the agricultural economy but a diversity livestock are kept , including cattle , pigs , goats , chickens , ducks and geese . vegetable are grown too , often in the shelter of
the grounding, despite the storm force winds. the helicopter crew later received a number of awards for bravery. there was no loss of life, but this incident prompted the building of a lighthouse on the skerries in 1979, and may also have been the example required for the formation of the present search and rescue helicopter unit, based at sumburgh airport. = = economy & transport = = crofting is the mainstay of island life. sheep form the backbone of the agricultural economy but a diversity livestock are kept, including cattle, pigs, goats, chickens, ducks and geese. vegetable are grown too, often in the shelter of